Move cli application to lib and improve cov tool.

.simplecov

@@ -0,0 +1,3 @@
+SimpleCov.start do
+  add_filter "/spec/"
+end

exe/mathnet

@@ -1,136 +1,5 @@
 #!/usr/bin/env ruby
 require 'rubygems'
-require 'commander'
-require 'parallel'
-require 'net/http'
-require 'mathnet/crawler'
-require 'exponential_backoff'
+require 'mathnet/cli'
 
-# CLI for search and download articles from mathnet site.
-class MathnetApplication
-  include Commander::Methods
-
-  # Initialize constances.
-  def initialize
-    @minimal_interval = 1.0
-    @maximal_elapsed_time = 600.0
-    @base_dir = 'mathnet'
-  end
-
-  # Process programm call via command line.
-  def run
-    program :name, 'Mathnet crawler.'
-    program :version, Mathnet::Crawler::VERSION
-    program :description, 'Command that act like missed mathnet client.'
-    add_download_all_command
-    add_articles_command
-    add_journals_command
-    run!
-  end
-
-  def add_download_all_command
-    command :'download all' do |c|
-      c.description = 'Download all articals.'
-      c.action do
-        journals = list_journals
-        issues = list_issues journals
-        articles = list_articals issues
-        download_aricles articles
-      end
-    end
-  end
-
-  def add_articles_command
-    command :articles do |c|
-      c.description = 'List articles per journal.'
-      c.action do
-        articles = list_articals list_issues list_journals
-        articles.each do |article|
-          say "#{article.journal_title}/#{article.title}"
-        end
-      end
-    end
-  end
-
-  def add_journals_command
-    command :journals do |c|
-      c.description = 'List journals on mathnet.'
-      c.action do
-        journals = list_journals
-        journals.each do |journal|
-          say journal.title
-        end
-      end
-    end
-  end
-
-  # Return all journals published on mathnet.
-  def list_journals
-    process_backoff do
-      Mathnet::Crawler::Journal.list Mathnet::Crawler::Library.new
-    end
-  end
-
-  # Return all issues that existing in passed journals.
-  # @param journals [Array] of [Mathnet::Crawler::Journals] that having issues.
-  def list_issues(journals)
-    issues_lists = Parallel.map(journals, progress: 'List issues') do |journal|
-      process_backoff { Mathnet::Crawler::Issue.list journal }
-    end
-    issues_lists.reduce do |initial, item|
-      initial + item
-    end
-  end
-
-  # Return all articles that existing in passed issues.
-  # @param issues [Array] of [Mathnet::Crawler::Issue] that having articles.
-  def list_articals(issues)
-    articals_lists = Parallel.map(issues, progress: 'List articals') do |issue|
-      process_backoff { Mathnet::Crawler::Article.list issue }
-    end
-    articals_lists.reduce do |initial, item|
-      (item && initial + item) || initial
-    end
-  end
-
-  # Store full texts of passed articles.
-  # @param articles [Array] of [Mathnet::Crawler::Article] that having
-  #   full texts.
-  def download_aricles(articles)
-    Parallel.each(articles, progress: 'Download texts') do |article|
-      pdf_path = article_path article
-      process_backoff do
-        article.full_text do |body|
-          pdf = File.new pdf_path, 'w'
-          pdf.write body
-          pdf.close
-        end
-      end
-    end
-  end
-
-  # Execut block with exponential backoff
-  # @param &block [block] do http request and if http error occured,
-  #   we would retry it.
-  def process_backoff(&block)
-    backoff.until_success do
-      begin
-        block.call
-      rescue Net::HTTPServerException
-        false
-      end
-    end
-  end
-
-  def article_path(article)
-    directory = File.join @base_dir, article.journal_title
-    FileUtils.mkdir_p directory if Dir.exist?(directory)
-    File.join directory, "#{article.title}.pdf"
-  end
-
-  def backoff
-    ExponentialBackoff.new @minimal_interval, @maximal_elapsed_time
-  end
-end
-
-MathnetApplication.new.run if $PROGRAM_NAME == __FILE__
+Mathnet::Application.new.run if $PROGRAM_NAME == __FILE__

lib/mathnet/cli.rb

@@ -0,0 +1,136 @@
+#!/usr/bin/env ruby
+require 'rubygems'
+require 'commander'
+require 'parallel'
+require 'net/http'
+require 'mathnet/crawler'
+require 'exponential_backoff'
+
+module Mathnet
+  # CLI for search and download articles from mathnet site.
+  class Application
+    include Commander::Methods
+
+    # Initialize constances.
+    def initialize
+      @minimal_interval = 1.0
+      @maximal_elapsed_time = 600.0
+      @base_dir = 'mathnet'
+    end
+
+    # Process programm call via command line.
+    def run
+      program :name, 'Mathnet crawler.'
+      program :version, Crawler::VERSION
+      program :description, 'Command that act like missed mathnet client.'
+      add_download_all_command
+      add_articles_command
+      add_journals_command
+      run!
+    end
+
+    def add_download_all_command
+      command :'download all' do |c|
+        c.description = 'Download all articals.'
+        c.action do
+          journals = list_journals
+          issues = list_issues journals
+          articles = list_articals issues
+          download_aricles articles
+        end
+      end
+    end
+
+    def add_articles_command
+      command :articles do |c|
+        c.description = 'List articles per journal.'
+        c.action do
+          articles = list_articals list_issues list_journals
+          articles.each do |article|
+            say "#{article.journal_title}/#{article.title}"
+          end
+        end
+      end
+    end
+
+    def add_journals_command
+      command :journals do |c|
+        c.description = 'List journals on mathnet.'
+        c.action do
+          journals = list_journals
+          journals.each do |journal|
+            say journal.title
+          end
+        end
+      end
+    end
+
+    # Return all journals published on mathnet.
+    def list_journals
+      process_backoff do
+        Crawler::Journal.list Crawler::Library.new
+      end
+    end
+
+    # Return all issues that existing in passed journals.
+    # @param journals [Array] of [Mathnet::Crawler::Journals] with issues.
+    def list_issues(journals)
+      issues_lists = Parallel.map(journals, progress: 'List issues') do |j|
+        process_backoff { Crawler::Issue.list j }
+      end
+      issues_lists.reduce do |initial, item|
+        initial + item
+      end
+    end
+
+    # Return all articles that existing in passed issues.
+    # @param issues [Array] of [Mathnet::Crawler::Issue] that having articles.
+    def list_articals(issues)
+      articals_lists = Parallel.map(issues, progress: 'List articals') do |i|
+        process_backoff { Crawler::Article.list i }
+      end
+      articals_lists.reduce do |initial, item|
+        (item && initial + item) || initial
+      end
+    end
+
+    # Store full texts of passed articles.
+    # @param articles [Array] of [Mathnet::Crawler::Article] that having
+    #   full texts.
+    def download_aricles(articles)
+      Parallel.each(articles, progress: 'Download texts') do |article|
+        pdf_path = article_path article
+        process_backoff do
+          article.full_text do |body|
+            pdf = File.new pdf_path, 'w'
+            pdf.write body
+            pdf.close
+          end
+        end
+      end
+    end
+
+    # Execut block with exponential backoff
+    # @param &block [block] do http request and if http error occured,
+    #   we would retry it.
+    def process_backoff(&block)
+      backoff.until_success do
+        begin
+          block.call
+        rescue Net::HTTPServerException
+          false
+        end
+      end
+    end
+
+    def article_path(article)
+      directory = File.join @base_dir, article.journal_title
+      FileUtils.mkdir_p directory if Dir.exist?(directory)
+      File.join directory, "#{article.title}.pdf"
+    end
+
+    def backoff
+      ExponentialBackoff.new @minimal_interval, @maximal_elapsed_time
+    end
+  end
+end